/Engine/Source/Runtime/Engine/Classes/Kismet/KismetMathLibrary.h
If bPickA is true, A is returned, otherwise B is
static [FString](API\Runtime\Core\Containers\FString) SelectString ( const [FString](API\Runtime\Core\Containers\FString) & A, const [FString](API\Runtime\Core\Containers\FString) & B, bool bPickA )